Cribbing



0. S. FLATH June 12, 1945.

CRIBBING Original Filed Sept. 28, 1942 INVENTOR, 080' g Patented June 12,- 1945 Ori inal ap i ion S p b .28 1,94 Srial iyided and this application 1 August 14, 1944, Serial No. 549,353

3 Claims.

. invention relates 7 to cribbing composed of metal or steel members for constructing walls for supporting embankments or frills being espe cially adapted for use in the construction of walls for trenches and the like where time is of the essence and convenience crease in handling is essential.

The, invention has for its object the provision I of easily fabricated members of comparatively simple construction, which may be readily assembled into the desired wall and the assembled members secured together without need for special skill to provide a sturdy retaining wall.

,Another object of I the invention is the provision of an economical wall composed of a' few standard elements involving a unit or member of sheet steel-which may be pressed. into 'shape-. which maybe employed [either as aheader or as aqstretcher and the ends of the header members and of the stretcher members formed to provide ,interengaging relation and to bev rigidly secured together; with the memberspreferably being provided with rigidifying surfaces so arranged-0r formed that the respective members may be assembled into contiguous relation to provide an uninterrupted, outer face whereby the fill is prevented from filtering therethrough.

The above enumerated objects and advantages as well as other advantages inherent in the invention will all be readily comprehended from the following detailed description of the accompanying drawing wherein:

Figure 1 is a perspective cribbing illustrating the contiguous ends of a number of units assembled to constitute headers and stretchers, with portions broken away.

Figure 2 is a plan view of the header unit shown in Figure 1, with an intermediate portion broken away."

My improved cribbing involves a plurality of elongated sheet metal members with their ends arranged in' overlapping engagement and the overlapping ends secured together by suitable easily applied fastening means.

In the exemplification as shown in the draw-- ing, the respective members consist of preformed straight-edged rectangular steel sheets to constitute header units and stretcher units; the respective units being adapted to lengthwisely rest on each other and thereby provide a cribbing with an uninterrupted or unbroken outer face.

As shown in the drawing, the headers ID and the stretchers H consist ofsingle steel sheets of predetermined width and length; the headers and stretchers preferably being of equal width and viewof a section of 1 .ends of the headers in.

provided with longitudinally extendin corrugat e s r a e l y o d po t nS mature rigidifying surfaces, as at l2, which'terminate a; distance removed from the endsof thesheets as wellas' fromthe longitudinal edges or the sheets. The respective sheets either may be provided with a single dishing or corrugation 12, as shown on the header In, or provided with a plurality of longitudinally extendingcorrugations as shown at M on the stretchers ll; thecorrugations being arranged a distance removed irom the ends and also from the-longitudinal edges of the sheets,

with the upper and lower longitudinal edges arranged in substantially the same vertical plane to permit thev respective header sheets. .and

stretcher sheets to beedgewisely arranged in superposed relation; it being understood that the headers and stretchers maybe provided with similar bowed portions orcorrugations and thus require a single formerv or die in the. fabrication of the respective units, which materiallyreduces the costo n fa tu e i h end o t respect ve h ts or a e provided with similar vertical or transversely disposed corrugations it, which, the units are assembled, are adapted to match each other.

The sheets, which are to constitute the stretchers,

have their corrugated ends bent laterally at right angles to the main part of they sheet, as shown at It, thus enabling the corrugationsiS of the stretchers to effect interengaging relation with v the corrugations 15' of the forwardly presented The transversely corrugated endsof the headers and stretchers are provided with equally spaced holes, asshown at H, and the holes in the bent ends l6 of the stretchers brought to register with the holes in the headersso as to receive the bolts 18. I

Both ends of the stretchers are bent toward the same side of the stretcher, thus permitting .end-for-end use of the stretchers.

In the section of cribb'ng shown in'the drawing, each header unit is shown consisting of a single sheet, as is also the case with the stretcher units; stretcher units being arranged on opposite sides of the headers. I I

In order to tie or secure the respective courses together, the ends of the stretchers ll arearranged in overlapping relation with two superposed headers, so that when the bolts were placed in the registered holes in the angularly disposed ends of the stretchers, at opposite sides of the headers,. and through the holes in the headers and the nuts screwed tightly on the bolts,

the respective courses will be firmly anchored or secured together. With the vertical corrugations of the headers and stretchers firmly bolted in mating or interengaging relation, the bolts will be relieved of pulling strains and the stretchers held against movement lengthwisely of the headers; the corrugated header ends and stretcher ends on opposite sides of the headers providing a very rigid post-like or joint reenforcing construction adapted to withstand the outward thrust of the fill.

It will be understood that both ends of the headers and both ends of the stretchers are of similar construction so that either end of a stretcher will match both ends of a header; the stretchers being arranged in superposed edge-toedge contact thereby providing the cribbing with a continuous or unbroken outer face which prevents filtering of the fill therethrough; and with the staggered relation between the stretchers and headers a sturdy construction is provided and the possibility of one course shifting on the other is made impossible.

The cribbing, in the usual practice, is preferably provided with a suitable foundation and the cribbing built up to any desired heighth in keeping with the particular conditions encountered; the length of the headers adjacent the top of the cribbing being reduced if desired but of the same construction shown and described.

As is apparent'from the construction shown, the header sheets and the stretcher sheets are identical in construction; the sheets which are to constitute the stretchers, after the ends have been provided with the lateral corrugations l5, are then bent at right angles to the main portion of the sheet; thus enabling all of the sheets to be formed within a single die.

This application relates to divisional subject matter of my copending application Serial Number 460,023, Patent No. 2,358,698, issued September 19, 1944; the present application covering the structure disclosed in Figures '7 and 8 of the aforesaid application.

What I claim is:

1. A cribbing of the character described comprising headers and stretchers composed of elongated sheets of metal provided with longitudinally disposed rigidifying surfaces, while the ends of the headers and stretchers are provided with transversely disposed corrugations, the ends of the stretchers being bent laterally and arranged in interlocking relation with the corrugations at the ends of the headers; and means whereby the headers and stretchers are held against movement.

2. A cribbing of the character described comprising header members and stretcher members arranged in interengaging staggered relation with the headers of one course having interengagement with the stretcher members of two courses; all of said members consisting of elongated metal sheets having longitudinally extending rigidifying surfaces, with the ends of said members having transverse or vertically extending corrugations with the corrugated ends of certain members bent laterally and the corrugated ends of the header and stretcher members arranged in mating relation; and means whereby the header and stretcher members are secured together.

3. A cribbing of the character described composedof similarly formed elongated rectangular metal sheets provided with straight longitudinal marginal portions and arranged in superposed edge to edge relation to constitute headers and stretchers, with the ends of the stretchers bent laterally and arranged in overlapping relation with the ends of the headers, the ends of the headers and the ends of the stretchers being provided with similar vertical or transversely disposed interlocking corrugations and with uniformly spaced bolt-holes, the ends of each stretcher member being arranged in overlapping relation with two superposed header members; and fastening bolts in the registered holes of the headers and stretchers whereby the corrugated ends of the headers and stretchers are held in interlocking engagement.

OTTO S. FLATH. 

